#481 Setter service function should return correct values

[phoebehala]

This issue resolves #481 by:

Proposed changes

setParticipantActivityCompletion() return the participantActivityId and the completion status (true or false) of an inserted row in the table Test functions updated to reflect the above service function changed

Checklist

• [x] Are the issues being addressed linked to this PR?
• [x] Do all commit messages start with the issue number?
• [x] Are all code changes sufficiently tested?
• [ ] Are there screenshots for UI changes?